radiator fan not working symptoms

Radiator Fan Motor Replacement. One of the first symptoms that is commonly associated with a bad or failing fan clutch is an overheating engine.

Bad Radiator Cooling Fan Symptoms Rx Mechanic

Symptoms of a P0691 code may include.

. Fan Clutch Symptoms. If your vehicle has two fans and one of the two fans isnt working the problem could be the bad fan or a faulty relay. Usually a bad or failing relay will produce a few symptoms that can alert the driver of a potential issue.

One of the first symptoms of a problem with the fog light relay is an audible clicking noise from the relay. Any of these will lead to engine overheating. DTC P0691 is set when the PCM senses the voltage low when the cooling fan 1 is off.

The opposite is true when commanded on grounded the voltage is somewhere near zero. If the radiator fan isnt working a failed relay is one of the possible causes. As I always advise if youre not a car enthusiast or a petrolhead who knows the working principles of the underhood components seek professional advice to avoid causing injury to yourself.

If the hose feels cool or warm but the engine feels hot either the thermostat is stuck closed the radiator is clogged or the water pump is not working. Air Conditioner Vacuum and Recharge. Vehicular overheating could also be caused when the radiator fan doesnt operate or the coolant level is low.

The upper radiator hose connects the upper radiator tank to the engine at the thermostat housing. Both should feel hot to the touch. Air Conditioner Not Working.

Many relays will produce a quiet audible click when they are switched on however an. The radiator cooling fan is extremely important especially in hot weather and stop-and-go driving since it is needed to draw air through the radiator to remove heat from it when the can is stopped or moving slowly. The relay isnt the only possible cause nor is it the most common cause.

In case you choose to check your coolant level allow the engine to cool down before opening the radiator cap. The voltage on the signal circuit is high around battery voltage when not commanded on not grounded. The fan clutch is responsible for controlling the operation of the cooling fans.

A bad fan clutch may not engage properly or at all and as a result will disable the fans or prevent them from working at maximum efficiency. Symptoms Severity of Code. Clicking sound from the relay.

Signs Of A Failing Radiator Fan